Return movement device for weaving loom heddle frames



June 15, 1954 J. PICANOL 2,631,079

RETURN MOVEMENT DEVICE FOR WEAVING LOOM HEDDLE-FRAMES Filed Sept. 27,1951 3 Sheets-Sheet l /V 0 Jain 25 15420! %%sys J. PICANOL June 15, 1954RETURN MOVEMENT DEVICE FOR WEAVING LOOM HEDDLE-FRAMES Filed Sept. 27,1951 3 Sheets-Sheet 2 ANN Ja W

June 15, 1954 p c o 2,681,079

RETURN MOVEMENT DEVICE FOR WEAVING LOOM HEDDLE-FRAMES Filed Sept. 27,1951 3 Sheets-Sheet 5 llY/[WIOR Jaime Pica/206 Patented June 15, 1954RETURN MOVEMENT DEVICE FOR WEAVING LOOM HEDDLE FRAMES Jaime Picanol,Zandberg, Zillebcke-lez-Ypres, Belgium Application September 27, 1951,Serial No. 248,612

1 Claim.

The present invention relates to a return device for the drive of theheddle-irames in weaving looms in which the heddle-frames, animated by avertical alternative movement, are positively displaced in one directionby a driving mechanism and are urged back in the reverse direction by anelastic device. Different systems with spring action have been used aselastic devices, these were placed at the top or at the bottom of theloom, according to the nature and the position of the driving mechanism.

The invention relates to a device of the type using spiral springs whichurge the heddleframes upwardly from their lower to their upper position.

The device, according to the invention, is char acterised by the factthat each heddle-frame is placed between a single driving lever situatedunderneath said heddle-irame to actuate the latter downwardly and areturn movement device which has two independent supports fixed aboveeach of the lateral frames of the loom and mountin a spiral spring and aguiding pulley respectively, for each heddle-frame. end of said spiralspring is fixed with relation to its support and the external part ofsaid spring is provided with a pair of flexible belts urging theheddle-frame upwardly. One of said belts is hooked directly to one ofthe upper corners of the heddle-frame, and the other belt is trainedover said guiding pulley to be hooked over to the other upper corner ofthe heddleframe.

The return springs for the even numbered heddle-frames are situated atone side of the loom and the return-springs for the uneven numberedheddle-frames are situated at the other side of the loom. On the otherhand, the guiding pulleys for the uneven numbered heddleframes aresituated on the first mentioned side of the loom and the guiding pulleysfor the even numbered heddle-frames are disposed on the last mentionedside of the loom. Each heddleframe is urged upwardly by one singlespiral spring and downwardly by one single driving lever.

In this manner, the frame of the loom may be substantially modified ascompared to the con ventional embodiments and the archivolt or uppercross-beam, which normally extends above the loom and is particularlycumbersome, is no longer necessary. Thus, with the use of the device,accordin to the present invention, .the upper part of the loom becomessubstantially free of obstructions and this highly increases the Theinner visibility in the weaving rooms allowing better supervision andbetter illumination of the loom.

A preferred embodiment according to the invention is described, as anexample, hereafter with reference to the accompanying drawings, inwhich:

Figure 1 is a schematic View of the device ac cording to the presentinvention;

Figure 2 is an elevation view of the essential elements of this device.

Figure 3 is a plan view of the device shown in Figure 2; and

Figure 4 is a general perspective View of a weaving loom provided withthe device according to the present invention.

The device, according to the invention, comprises essentially aheddle-frame I of conventional type interposed between a singleoperating lever 2 for positively displacing said heddleframe downwardlythrough the intermediary of its lower cross-bar 3 which is hooked to theheddle-frame by the hooks i, 5 and at least one spiral spring 6 housedin drum 1; one of the ends of said spiral spring is directly orindirectly extended by flexible links consisting of tapes or belts 8, 9.The belt 8 is directly fixed to the adjacent upper corner of theheddle-frame l and the belt 9 is trained over an intermediary pulley l0and is fixed to the other upper corner of said heddle-frame I.

In the embodiment of Figures 2 and 3, we find these various elements;the drums I and 1 house the spiral springs 6 and 6 respectively and theintermediary pulleys l9 and It are mounted at the extremity of bracketsH and H respectively thereby forming an arrangement which permits thecomplete clearing of the upper medium part of the loom. In this case,the drum 1 is rotatably mounted on the upper extremity of a bracket Hresting directly, through its base I2, on the frame l3 of the loom. Thisbracket extends in a manner to correctly position the drum '1 so thatthe latter lies practically in the plane of the associated heddle-frame.The belt 8 is secured to the drum 1 at one end and is directly hooked tothe upper edge of the heddle-frame i at the other end so as to remainsubstantially vertical during the different up-and-down movements of theheddle-frame. The intermediary pulley ii! is rotatably mounted at oneend of an arm id depending from the bracket H and is adapted to supportthe belt 9, so that the portion of the latter comprised between saidpulley and the heddle-frame I will also remain substantially verticalduring the up-and-down movements of 3 the heddle-frame. The bracket IIwith its depending arm 14 is placed on one side of the heddle-frameswhile the bracket H with its depending arm it is placed on the otherside of the heddle-frames, so that all the spiral springs S of the evennumbered heddle-frames such as the heddle-frame I and the intermediarypulleys H) of the uneven numbered heddleframes such as the heddle-framel are disposed on one side of the loom while the springs 6 of the unevennumbered heddle-frames l together with the pulleys Ii) of the evennumbered heddle-frames l are disposed on the other side of the loom. Inthis manner a perfectly balanced distribution of the elements of thedevice is obtained and the occupied space is reduced to a minimum. Allthe spiral springs and the drums of the even numbered heddle-franies aremounted on the same bracket, whereas all the spiral springs and thedrums of the uneven numbered heddle-frames are mounted on the oppositebracket. The intermediate pulleys ill of the even numbered heddleframesare disposed on a common shaft mounted on an arm it and similarly, allthe intermediate pulleys ii of the uneven numbered heoldle-frames aredisposed on another shaft mounted on the opposite arm I4. In otherwords, one heddle-frame i of each pair of heddle-frames i and I isconnected to a drum 1 disposed on one side of the loom while the otherheddle-frame i of each pair of heddleframes I and I is connected to adrum mounted on the other side of the loom. Due to the fact that theplurality of drums l mounted on a common shaft are connected to everysecond heddle-frame, the successive heddle-frames may be disposed veryclose to each other and thus no room is wasted. The same holds true forthe drums l on the other side of the loom and for the pulleys Hi and i0.

By means of this arrangement, each heddleframe is positively drivendownwardly by a single operating lever disposed at the lower part of theloom, and is pulled back upwardly by the two belts by which it issuspended, these belts being urged by the same spiral spring. The uppermedium part of the loom remains practically free of obstruction allowinga better illumination of the loom and a better visibility of the rearpart of the same.

It will be possible to make various modifications to the device of thepresent invention depending more particularly on the means used for thepositive drive by a single lever without departing from the spirit andscope of the ap pended claim.

I claim:

In a return movement device for a plurality of pairs of heddle-frames ina weaving loom, a pair of support brackets mounted on said loom and eachextending above one end of said pairs of heddle-frames, a first seriesof drums rotatably mounted at the upper end of one of said brackets andin vertical alignment with one heddle-frame of said pairs ofheddle-frames respectively, a second series of drums mounted on theupper end of the other of said brackets and respectively in verticalalignment with the other heddleframe of said pairs of heddle-frames, aspiral spring housed within each drum and urging the said drum torotate, a pair or" flexible links for each drum trained over the sameand attached at one end to said drum, an arm depending from each of saidbrackets, a plurality of pulleys rotatably mounted on each of said arms,said pulleys being respectively in alignment with the drums mounted onthe opposite brackets, one link of each pair of links being connected toone upper corner of the aligned heddledrame and the other link of eachof said pair of links being trained over an aligned pulley and attachedto the other corner of said aligned heddle-irame.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 729,190 Knox May 25, 1903 2,455,263 Nichols Nov. 39, 19482,501,157 Brown et al Mar. 21, 1950 2,557,033 Lake June 12, 1951

